11530982997 has 12 divisors (see below), whose sum is σ = 16669611244. Its totient is φ = 7680977280.

The previous prime is 11530982963. The next prime is 11530983019. The reversal of 11530982997 is 79928903511.

11530982997 is a `hidden beast` number, since 11 + 530 + 9 + 8 + 2 + 9 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2488114161 + 9042868836 = 49881^2 + 95094^2 .

It is not a de Polignac number, because 11530982997 - 2⁶ = 11530982933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530982917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517204 + ... + 539037.

Almost surely, 2^11530982997 is an apocalyptic number.

It is an amenable number.

11530982997 is a deficient number, since it is larger than the sum of its proper divisors (5138628247).

11530982997 is a wasteful number, since it uses less digits than its factorization.

11530982997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057460 (or 1057457 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The spelling of 11530982997 in words is "eleven billion, five hundred thirty million, nine hundred eighty-two thousand, nine hundred ninety-seven".